# File src/ruby_supportlib/phusion_passenger/vendor/union_station_hooks_core/lib/union_station_hooks_core/request_reporter/basics.rb, line 164
    def log_writing_rack_body_end(id)
      return do_nothing_on_null(:log_writing_rack_body_end) if null?
      return if id.nil?
      @transaction.log_activity_end('app writing out response body')
    end